[IRCA] Fw: ARLP044 Propagation de K7RA

["Art Blair" <artngwen@xxxxxxxxxx>]

----- Original Message ----- 
From: "W1AW Mailing List" <w1aw-list-request@xxxxxxxxxxxxxxxxx>
To: <artngwen@xxxxxxxxxx>
Cc: <W1AW List:>
Sent: Friday, October 27, 2006 6:59 AM
Subject: ARLP044 Propagation de K7RA


> SB PROP @ ARL $ARLP044
> ARLP044 Propagation de K7RA
> 
> ZCZC AP44
> QST de W1AW  
> Propagation Forecast Bulletin 44  ARLP044
>>From Tad Cook, K7RA
> Seattle, WA  October 27, 2006
> To all radio amateurs 
> 
> SB PROP ARL ARLP044
> ARLP044 Propagation de K7RA
> 
> Early on Friday morning before the CQ World Wide SSB DX Contest,
> conditions are stable and quiet, and after the sunspot number rose
> to 50 this week following eight days of no sunspots, the average
> daily sunspot number increased from nothing to 23.3. Unfortunately,
> the stable quiet conditions are not expected to last through the
> contest.
> 
> The predicted planetary A index for Friday through Monday, October
> 27-30, is 10, 20, 10 and 5. Geophysical Institute Prague calls for
> unsettled conditions today, October 27, unsettled to active on
> October 28, quiet to unsettled on October 29-30, and back to quiet
> conditions for October 31 through November 2. Also, on Thursday
> October 26, the sunspot number was back to 0. Don't be surprised if
> we see no sunspots through the weekend and beyond.
> 
> With no sunspots visible, we might think of the sun as blank, but
> check this photograph taken by an amateur astronomer on Thursday.
> You'll see quite a bit of detail at,
> http://www.sungazer.net/102506.html.
> 
> An interesting observation came in from Randy Crews, W7TJ of
> Spokane, Washington. He's been going through his old paper logs, and
> entering the data into his logging program. Randy writes, "What is
> interesting is how productive 80 and especially 160 Meters are the
> year before, the year of, and especially the year following the
> bottom of the sunspot cycle. DXers should really take full advantage
> of the unique quiet portion of cycle 23's end, and the beginning of
> cycle 24 spending extra time on the low bands for needed countries,
> etc."
> 
> Good timely information, as we head into the solar minimum over the
> next six to eight months.
> 
> NASA announced the successful launch of the 3D Solar Imaging
> satellites on Wednesday. The mission is called STEREO, and it is
> expected to render exciting 3-dimensional images of coronal mass
> ejections. Read about it on the web at,
> http://www.nasa.gov/mission_pages/stereo/main/index.html.
> 
> If you would like to make a comment or have a tip for our readers,
> email the author at, k7ra@xxxxxxxxx
> 
> For more information concerning radio propagation, see the ARRL
> Technical Information Service at,
> http://www.arrl.org/tis/info/propagation.html. For a detailed
> explanation of the numbers used in this bulletin see,
> http://www.arrl.org/tis/info/k9la-prop.html. An archive of past
> propagation bulletins is at, http://www.arrl.org/w1aw/prop/.
> 
> Sunspot numbers for October 19 through 25 were 14, 15, 16, 18, 50,
> 35 and 15 with a mean of 23.3. 10.7 cm flux was 69.6, 71.1, 74.7,
> 75.8, 76.4, 74.8, and 74.7, with a mean of 73.9. Estimated planetary
> A indices were 2, 10, 15, 13, 3, 4 and 4 with a mean of 7.3.
> Estimated mid-latitude A indices were 1, 9, 10, 12, 2, 3 and 4, with
> a mean of 5.9.
> NNNN
> /EX
> 
> 
>

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